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IsProcessorFeaturePresent The IsProcessorFeaturePresent function determines whether the specified processor feature is supported by the current computer.
VB4-32,5,6
Declare Function IsProcessorFeaturePresent Lib "kernel32.dll" (ByVal ProcessorFeature As Long) As Long |
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Operating Systems Supported |
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Requires Windows NT 4.0 or later; Win9x/ME: Not supported |
- ProcessorFeature
[in] Specifies the processor feature to be tested. This parameter can be one of the following values.
PF_FLOATING_POINT_PRECISION_ERRATA
In rare circumstances, a floating-point precision error can occur (Pentium).
PF_FLOATING_POINT_EMULATED
Floating-point operations are emulated using a software emulator.
Windows 2000/XP: This function returns a nonzero value if floating-point operations are emulated; otherwise, it returns zero.
Windows NT 4.0: This function returns zero if floating-point operations are emulated; otherwise, it returns a nonzero value. This behavior is a bug that is fixed in later versions.
PF_COMPARE_EXCHANGE_DOUBLE
The compare and exchange double operation is available (Pentium, MIPS, and Alpha).
PF_MMX_INSTRUCTIONS_AVAILABLE
The MMX instruction set is available.
PF_XMMI_INSTRUCTIONS_AVAILABLE
The XMMI instruction set is available.
PF_3DNOW_INSTRUCTIONS_AVAILABLE
The 3D-Now instruction set is available.
PF_RDTSC_INSTRUCTION_AVAILABLE
The RDTSC instruction is available.
PF_PAE_ENABLED
The processor is PAE-enabled. |
If feature is supported, the return value is a nonzero value.
If the feature is not supported, the return value is zero. |
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